I checked my wife's Win 10 today, but we had never installed it, only use VLC, it was a mainstay with earlier versions of Windows. Goes to prove that no application is safe. Constant vigil is the by word. Never open any attachment in an email, social network site, even from trusted senders. They could have inadvertently send an innocent link that had malware attached. Even my beloved Linux had problems with 'Flash' (some distros will not allow it to be installed) & hacking through the distro's forum affecting the .iso download.